Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape

The antineutrino spectra measured in recent experiments at reactors are inconsistent with calculations based on the conversion of integral beta spectra recorded at the ILL reactor. Rb-92 makes the dominant contribution to the reactor antineutrino spectrum in the 5-8 MeV range but its decay properties are in question. We have studied Rb-92 decay with total absorption spectroscopy. Previously unobserved beta feeding was seen in the 4.5-5.5 region and the GS to GS feeding was found to be 87.5(25)%. The impact on the reactor antineutrino spectra calculated with the summation method is shown and discussed

Cultura urbana en televisión. Programa cultural realizado por profesores y alumnos de la Facultad de Ciencias de la Información

Con un enfoque para la docencia que plantea una universidad basada en el entusiasmo y en la participación a través de un modelo de aprendizaje que motive y sepa entusiasmar a los estudiantes, planteamos como proyecto de innovación para mejora de la calidad docente la creación de un programa de televisión sobre la cultura urbana vinculado a las asignaturas de: - "Producción y realización publicitaria" (Grado en Publicidad y Relaciones Públicas) - "Realización publicitaria" (Grado en Comunicación Audiovisual) - "Dirección cinematográfica" (Grado en Comunicación Audiovisual) - "Realización televisiva" (Grado en Comunicación Audiovisual) Y a los TFG relacionados con las áreas de conocimiento de realización y producción.Se crearían tres categorías en las que los alumnos podrían participar con sus trabajos: rodajes,reportajes audiovisuales y reportajes fotográficos y spots publicitarios. Los alumnos, tras haber pasado por alguna de las asignaturas o TFG propuestos, con sus respectivas prácticas, ya tienen un training que les capacita para sacar adelante un trabajo colaborativo, un proyecto y además les forma en las competencias profesionales necesarias para el trabajo en equipo. Además, el proyecto incluye la creación de una web y un laboratorio audiovisual (que ya está en marcha) para la difusión de los trabajos presentados y como herramienta para ampliar la proyección profesional y académica de los alumnos. El reto es poner Internet al servicio de la capacidad creativa y técnica de los estudiantes como fórmula para descubrir el nuevo talento, para poder experimentar con un nuevo medio al alcance de todos, y para conseguir una muy amplia difusión. Internet, lo interactivo, lo virtual y lo on-line serían las grandes herramientas para la realización de este proyecto. Es una experiencia de trabajo en el que varias asignaturas se unen y en el que la planificación y la nota final de cada una de las asignaturas se consolidan un proyecto real para dar a conocer el funcionamiento del mundo laboral. Es un proyecto de integración de varias asignaturas que suman un conjunto de experiencias en los que la innovación es la primera premisa

SARS-CoV-2 Infection in Multiple Sclerosis

To understand COVID-19 characteristics in people with multiple sclerosis (MS) and identify high-risk individuals due to their immunocompromised state resulting from the use of disease-modifying treatments. Retrospective and multicenter registry in patients with MS with suspected or confirmed COVID-19 diagnosis and available disease course (mild = ambulatory; severe = hospitalization; and critical = intensive care unit/death). Cases were analyzed for associations between MS characteristics and COVID-19 course and for identifying risk factors for a fatal outcome. Of the 326 patients analyzed, 120 were cases confirmed by real-time PCR, 34 by a serologic test, and 205 were suspected. Sixty-nine patients (21.3%) developed severe infection, 10 (3%) critical, and 7 (2.1%) died. Ambulatory patients were higher in relapsing MS forms, treated with injectables and oral first-line agents, whereas more severe cases were observed in patients on pulsed immunosuppressors and critical cases among patients with no therapy. Severe and critical infections were more likely to affect older males with comorbidities, with progressive MS forms, a longer disease course, and higher disability. Fifteen of 33 patients treated with rituximab were hospitalized. Four deceased patients have progressive MS, 5 were not receiving MS therapy, and 2 were treated (natalizumab and rituximab). Multivariate analysis showed age (OR 1.09, 95% CI, 1.04-1.17) as the only independent risk factor for a fatal outcome. This study has not demonstrated the presumed critical role of MS therapy in the course of COVID-19 but evidenced that people with MS with advanced age and disease, in progressive course, and those who are more disabled have a higher probability of severe and even fatal diseas

Evolving trends in the management of acute appendicitis during COVID-19 waves. The ACIE appy II study

Background: In 2020, ACIE Appy study showed that COVID-19 pandemic heavily affected the management of patients with acute appendicitis (AA) worldwide, with an increased rate of non-operative management (NOM) strategies and a trend toward open surgery due to concern of virus transmission by laparoscopy and controversial recommendations on this issue. The aim of this study was to survey again the same group of surgeons to assess if any difference in management attitudes of AA had occurred in the later stages of the outbreak. Methods: From August 15 to September 30, 2021, an online questionnaire was sent to all 709 participants of the ACIE Appy study. The questionnaire included questions on personal protective equipment (PPE), local policies and screening for SARS-CoV-2 infection, NOM, surgical approach and disease presentations in 2021. The results were compared with the results from the previous study. Results: A total of 476 answers were collected (response rate 67.1%). Screening policies were significatively improved with most patients screened regardless of symptoms (89.5% vs. 37.4%) with PCR and antigenic test as the preferred test (74.1% vs. 26.3%). More patients tested positive before surgery and commercial systems were the preferred ones to filter smoke plumes during laparoscopy. Laparoscopic appendicectomy was the first option in the treatment of AA, with a declined use of NOM. Conclusion: Management of AA has improved in the last waves of pandemic. Increased evidence regarding SARS-COV-2 infection along with a timely healthcare systems response has been translated into tailored attitudes and a better care for patients with AA worldwide

Ahora / Ara

La cinquena edició del microrelatari per l’eradicació de la violència contra les dones de l’Institut Universitari d’Estudis Feministes i de Gènere «Purificación Escribano» de la Universitat Jaume I vol ser una declaració d’esperança. Aquest és el moment en el qual les dones (i els homes) hem de fer un pas endavant i eliminar la violència sistèmica contra les dones. Ara és el moment de denunciar el masclisme i els micromasclismes començant a construir una societat més igualitària. Cadascun dels relats del llibre és una denúncia i una declaració que ens encamina cap a un món millor

Ground-state shape determination of N~Z nuclei via beta decay studies

231 páginas. Tesis Doctoral del Departamento de Física Atómica, Molecular y Nuclear, de la Universidad de Valencia, y del Instituto de Física Corpuscular (IFIC). Fecha de lectura: 3 abril 2012Este trabajo se centra en el estudio de la zona de núclidos con déficit de neutrones en la región de masa A≈80 en la línea N∼Z, en particular el estudio del 77Sr, 78Sr, 76Rb y 78Rb. Esta zona de la carta de núclidos presenta unas propiedades muy particulares: cambios drásticos de forma del estado fundamental con el cambio de un par de nucleones, coexistencia de forma prolada y oblada dentro del mismo núcleo (shape-coexistence) y mezcla de forma en un mismo estado ("shape-mixing). En los núcleos par-par, el hecho de que el estado fundamental tenga espín I=0 imposibilita la medida experimental de su momento quadrupolar. Es posible deducir indirectamente la deformación pero sin embargo, ninguno de los métodos disponibles hasta ahora permite obtener el signo de la deformación, es decir, diferenciar entre un núcleo prolado u oblado. La deducción del signo de dicha deformación es una de las aportaciones principales de esta tesis. Para ello, se ha determinado experimentalmente la distribución de Gamow-Teller (GT) a través del estudio de la desintegración beta de dichos núclidos haciendo uso de un detector de absorción total de NaI(Tl). La obtención del signo de la deformación se ha basado en la comparación entre dicha distribución de GT obtenida experimentalmente y cálculos teóricos QRPA.FPU con número FPA2003-404

Total Absortion Spectroscopy of Fission Fragments Relevant for Reactor Antineutrino Spectra Determination

8 pags., 3 figs., 1 tab. ; Presented at the XXXIV Mazurian Lakes Conference on Physics, Piaski, Poland, September 6–13, 2015.The contribution of each fission fragment to the reactor antineutrino spectra was determined using the summation method based on the existing information on fission yields and decay data contained in nuclear databases and the reactor evolution code MURE. The beta decay of some of the main contributors has been studied using the Total Absorption Spectroscopy (TAS) technique during two experimental campaigns at the IGISOL facility, in Jyväskylä (Finland). Results on the decay of 92Rb, the most important contributor in the 4–8 MeV energy region are reported. The status of the analysis of the second experiment is presented as well.Peer Reviewe

Deformation of Sr and Rb isotopes close to the N=Z line via β-decay studies using the total absorption technique

A study of the Gamow-Teller strength distributions B(GT) in the beta decay of 78Sr and 76,78Rb has been made using a total absorption spectrometer (TAS). Following the success in deducing the sign of the deformation for 76Sr, a similar approach is adopted for 78Sr based on a comparison of the measured B(GT) with quasiparticle random-phase approximation calculations. This work confirms its previously expected prolate deformation in the ground state. Conclusions about the structure of the odd-odd 76,78Rb isotopes have been drawn based on their measured B(GT) distributions. © 2013 American Physical Society.This work was supported in part by the Spanish MEC under Grant No. FPA2005-03993 and Formación Profesorado Universitario Grant No. FPA2003-4041. It was also supported by MICINN Grants No. FPA2008-06419-C02-01, No. FPA2009-07387, No. FPA2010-17142, No. FPA2011-24533, and No. FIS2011-23565, by CPAN CSD-2007-00042, Ingenio 2010, and by the UK Science and Technology Facilities Council (STFC) Grant No. ST/F012012/1. The experiments were partly supported through EURONS No. 506065.Peer Reviewe

beta decay of (78)Sr

The gamma rays and conversion electrons emitted in the beta decay of (78)Sr to levels in (78)Rb have been studied using Ge detectors and a mini-orange spectrometer. A reliable level scheme based on the results of these experiments has been established. The properties of the levels in (78)Rb have been compared with calculations based on deformed Hartree-Fock with Skyrme interactions and pairing correlations in the BCS approximation. This has allowed an interpretation of the nature of the observed sets of levels in the odd-odd nucleus (78)Rb.This work was supported in part by the Spanish MEC under Grant No. FPA2005-03993 and a Formacion Profesorado Universitario (FPU) fellowship (FPA2003-4041). It was also supported by MICINN nuclear Grants No. FPA2008-06419- C02-01, No. FPA2009-07387, and No. FPA2010-17142 and by the U.K. Science and Technology Facilities Council (STFC) Grant No. ST/F012012/1. The experiments were partly supported through EURONS No. 506065.Peer Reviewe

Study of M1 excitations by high-resolution proton inelastic scattering experiment at forward angles

8 pages, 5 figures.-- PACS nrs.: 25.40.Ep, 25.70.De.-- ISI Article Identifier: 000247257800008.Published in the Proceedings of the 2nd International Conference on Collective Motion in Nuclei under Extreme Conditions (COMEX 2). Sankt Goar, Germany, June 20-23, 2006.Experimental technique for measuring proton inelastic scattering with high-resolution at 295 MeV and at forward angles including zero degrees have been successfully developed. An excitation energy resolution of less than 20 keV, good scattering angle resolution, low background condition, and reasonable background subtraction have been achieved. The experimental technique have been applied for several sd and pf shell nuclei for systematic study M1 and E1 excitations in nuclei. The experimental method and preliminary spectra are reported.Peer reviewe